It's interesting that this is being tried but I suspect it will never get past the experimental phase.
Even if it can be made to work, it's going to serialise the CPUs so much that that's no point having multiple CPUs.
It might be possible to show a nice speedup on some long running highly parallelisable benchmark but that's it. In any real system apps will be constantly stalling the system and you don't need to be Gene Amdahl to know what the result will be.